Air conditioning apparatus



Dec- 9, 1941- R. P. scHLlRF 2,265,317

AIR CONDITIONING APPARATUS Filed Jl11yv14, 1939 2 Sheets-Sheet l Dec'. 9, 1941. R. P. scHLlRF Y AIR CONDITIONING APPARATUS AFiled July 14, 1939 2 Sheets-Sheet 2 Patented Dec. 9, 1941 UNITED STAT-ES PATENT OFFICE 2,265,317 Am. CoNmTIoNING APPARATUS Robert i. schlaf, st. Paul, Application July 14, 1939, Serial No. 284,478 'z claims. (vol. 1st-35) The invention herein referred to relates to im.-` l provements in portable air conditioning units and is specifically designed for use in4 sma apartmentsor ollces. I

The object of the invention is to provide air circulating means whereby the room air may be kept dust clean and in constant circulation and wherein the air may be taken from the present room radiation and cleaned and circulated.

A further object of the invention is to provide A further object-is to provide simple mean-s for manually setting the flow direction of the pro-v pelled air and, I,

'A further object is to provide a means for manually regulating the air filtering element for the air filtering to each of the several intakes.

The further objects and the advantages of the invention reside in certain novel features of. the construction, combination and arrangement of parts which will be more fully described and particularly pointed out in this speciiication and the appended claims, reference being had to the accompanying drawings forming part of the specication in which, I 4

Fig-ure 1 is an exterior'perspective view of my invention.

Figure 2 is a longitudinal section taken on approximately line 2-2 of Figure 1. A

' Figure 3 is a cross section of my invention showing the multi-blade power blower and.

curved rotatable filtering element upon'the mo# tor shaft together with the several inlets or outlets; taken on the line of 3-3' of Figures 1 and 2.

Figure 4 is a sectional view taken on-the line 4`4 of Figure 2 showing the fan housing and its rotatablebearing whose center is the same as the motor shaft together with the arced rotatable filtering element.

Figure 5 isV a cross section taken on 5--5 of Figures land 2 showing the power inlet and secondary speed control; the current capacitator. together with the motor acting as power means for thev multi-blade fan, and

Figure 6 is a picture of a dual cabinet inwhich air may be projected simultaneouslyin two d1- rections as'taken in from any of the other direc- -tions and permitting fresh air to be taken from the outside to be expelled into the room and the foul air of the room expelled to the outside.

A In referring to the drawings, A represents the air conditioning cabinet which is mounted upon a base B provided withlegs C and a set of cablnet top positioning lugs D.' The cabinet A is provided with a series of openings I, 2, 3, and 4 which act as air` inlet or outlets as desired and are positioned at predetermined points. These openings being uniform in sizey are provided with inter-positional inset screens 5 or grilles secured withinscreen frames 6. The screen frames 6 f1tinto any of the before mentioned outlets and act as guards. When openings for either inlet or outlet are not to be used, the same are fitted with a closure 'I which in resemblance. actually 'isa screen frames .6 provided with closure sheet 1.

' The cabinet A is likewise provided with an internal mechanical working space S for the operating mechanism of this invention. A cabinets face is provided with an opening O into which is positioned the power cord bushing II through which' the power cord of an electric conductor P is threaded and which terminates in a rheostatic speed control switch Q manually operated by its controlling lever L positioned upon a switch shaft upon the outer face of the cabinet A.

v The power conductor cable P is then passed on to the motor capacitator X and thence into the motor Y for its power delivery. The motor Y through its base X is rigidly made fast to the cabinet base B by means of holding bolts I0 held .in locked position by nuts I4 held in locked position by lock washers 8 and washers 9.-

The motor Y throughits shaft YI imparts power to a multi-blade fan F'through its cantilevered fastening FI which acts as the fan support and i's bracketed by a series of supporting wing arms or wings F2 to suspend the multiblade fan F in an overhanging manner as best shown in Figure 2.

Imposed between the motor Y and the fan hub cantilevered fastening FI on the shaft YI is a self-lubricating bearing I5 which acts as a bearing for Vthe multi-blade fan housing H. The self-lubricating bearing I5 and fan housing hub I1 act as a spacer for the proper positioning of the multi-blade fan F from the motor.

The multi-blade fan Flis composed of a series of ns G made integrally fast at their ends into rings I8 spaced apart a predetermined distance.

The ring I8 at the fans power end is integrally made fast -to the supporting wing brackets F2 onto the hub FI and'powered bythe motor shaft YI. The fan hub cantilevered fastening FI is securely locked upon the shaft YI by the set screw I9.

The fan housing H which is snan nke in formation and acting as an air suction and air impelling means for the rotating fan, is provided the blower outlet and the walls I6 of the several openings I, 2, 3, and 4.

The fan housing H at its opposite end is supported by a lip closure HI which is likewise provided with air inlets l2Ia and forming a lipped closure end for the snail like housing. This lipped closure is provided with a shaft 23 whose center centers upon that of the motor shaft, thereby makingv it rotatable about a common point.

The cabinet shaft 23 is provided with a projectional shaft 24 upon which is locked an indicating finger 25 held in position by set screw 26. The housing closure HI whose shaft 23 journals within a rotatable shaft 21 is provided with arms 28a carrying the curved guide 29a which holds the curvedspun glass filtering element 30 in contactwith the curved portion of the wallsV I6 of the openings I, 2, 3, and 4. At the motor end of the fan, the bearing I1 of the fan housingh acts as a shaft for a similar filtering element supported as previously described-in a rotatable manner, supporting the hub 3I and its arms 32 so as to sustain theinner curved guide 29 which support the filter element 30 at' the motor end.

. The first mentioned ltering element support is provided with a shaft 21 of such suiiicient length as to project through and beyond the housing cabinet A and its bearing 33 to permit the placement of an indicating finger 34 which is held locked thereon by holding -means 35 to Ishow the directional setting of the rotatable filtering In operation, the appliance herein referred to and as hereinbefore specified will discharge air in any of the predetermined directions. Assuming that the air from below the 'cabinet shall be recirculated in the room to the right of the cabinet asL best shown in Figures 2, 3, and 4. The opening 4 would remain open as indicated while the openings 2 and 3 would be fitted with closure as best shown at opening 3. and the opening I would be grilled as shown in Figure 3.

The lever 25 would be set in the direction of the outfiow of air fro-m the cabinet while the lever 34 would be placed in an inoperative position as is bestfshown in Figure 3. The cabinet is now positioned for operation.

The power entering through the power cord Py to the control switch Q is then turned on by meansof control lever L permitting. a predetermined amount of power to pass through'the conductor to the motor capacitator X and then rotate the motor Y in its predetermined rotation which in this particular case is counterclockwise.

-The motor shaft YI being rotatedvwould because of its multiblade fan fastening I9 upon the cantilever support FI which through its fan wing brackets F2 made fast ringsv I8, spin the several blades G made fast thereto in a counterclockwise position, -creating suction within the housing H permitting air to be sucked in through opening 2| into the fan housing H and expelled through the fan housing exit opening 2l)v out through the opening I into the room. The fan housing exit opening 20 lis curved at its outer periphery so as to form 'a snug lit with the exit opening I, 2, 3, and 4so that the rotation of the fan housing about its center to any of the predetermined directions would make it possible for the air to be expelled in any of the predetermined directions.

The air within the chamber S of the cabinet is admitted through the opening 4 in this particular setting. Should it now be desired that the inowing air beclaried of dust, the lever 34 would be moved about its turnable point to the direction in which the air is to be taken, namely, downward.

. The indicator 34 which is rigidly made fast to the bearing 21 by the pin 35' through its bracket arms. 28a suspending thearc guides 29a that support the ltering element 30 would be rotated so the filtering element would slide over to inlet 4.

arms 28 extending from the hub 3| about the hub bearing I1 at the opposite end, is because of the rigidness of the filtering element, likewise turned so that the filtering element 30 will completely cover the cabinet opening 4, thereby removing all dust, lint and other impurities generally collected by spun glass filtering elements from the air entering into the inner chamber S from the exterior.

Should it be further desired that said cabinet .be placed upon a radiator of common construction' so that the heated air of the radiator enter the opening 4 to be circulated by the spinning of the fan F and expelled out through the opening I into the room and should it further be desired to intermingle the heated air with fresh air from outside source, the screen 5 within the screen frame 6 would be interchanged with the closure 1 as shown in Figure 3 thereby closing the top opening 2 of the cabinet and placing the grille 5 in opening 3. By rotating the arm 34 to a point mid-positioned between the openings 3 and 4 of the cabinet, the filtering element is rotated 'to align with both openings allowing both incoming heated air and new fresh air to be filtered before circulating in the room. Where a dual cabinet is employed for the recirculation of air and the possible intaking of fresh -air and the possible expulsion of foul air from a room and in which two fans'within a cabinet are employed, a divisional wall W is provided to separate the air chamber of the working space S.

1. An air conditioning apparatus comprising a casing having a plurality of inlet and outlet openings, air ducts extending inwardly from each of said openings and communicating: therewith, each duct terminating at its inner extremity on a common cylindrical surface, a fan casing having an outlet of a size and shape to correspond withy that of said ducts, means supporting said fan casing to swing about the axis of said common cylindrical surface, and to place said outlet into communication with any of said ducts, and a fan in said casing.

2. An air conditioning apparatus comprising a casing having a plurality of angularly vspaced inlet and outlet openings, air ducts communicat- The rotatable guide 29 which rests upon the ing with said openings and terminating on a common cylindrical-surface, a fan casing within said cylindrical surface, means pivotally ,supporting said fan casing swingable about the axis of said common surface, an outlet duct on said fan casing terminating on said common cylindrical surface and registrable with any of said air ducts, and a fan within said fan casing.

3. An air conditioning apparatus comprising a casing, a fan motor mounted in'said casing, a fan shaft connected to said motor for rotation thereby, a fan on said shaft, a fan casing, means mounting said fan casing rotatable about the axis of said fan shaft, an outlet duct on said fan casing terminating on a cylindrical surface coaxial with said fan shaft, said casing having a with its outer surface substantially on said cylindrical surface, and means supporting said filter r means swingable about the axis of said fan shaft series of openings terminating substantially on I said cylindrical surface, said outlet duct on said fan casing registrable with any of said openings.

4. An air conditioning apparatus comprising a casing, a fan propelling means mounted in said casing, ashaft rotated by said fan propelling means, a fan on'said shaft, a fan casing, means mounting said fan casing rotatable about the axis of said fan shaft, an outlet duct on said fan casing terminating on a cylindrical surface coaxial with said fan shaft, said casing having a series of openings terminating substantially on said cylindrical surface, said outlet duct on said fan casing registrable with any of ysaid openings, and means secured to said fan casing and extending through said casing by means of which said fan casing may be rotatably adjusted.

5. An air conditioning apparatus comprising a casing, a fan propelling means mounted in said casing, a fan shaft rotated by said fan propelling means, a fan on said shaft, a fan casing, means mounting said fan casing rotatable about the axis of said fan shaft, an outlet duct on said fan casing terminating on a cylindrical surface coaxial with said fan shaft, said casing having a series of 'ducts terminating substantially on said cylindrical surface, arcuate filter means ,arranged to extend in the path of air entering any of said ducts.

V 6. An air conditioning apparatus comprising a casing, a fan propelling means mounted in said casing, a fan shaft rotated by said fan propelling means,a fan on said shaft, a fany casing, means momting said fan casing rotatable about the'A axis of said fan shaft, an outlet duct on said fan casing terminating on a cylindrical surface coaxial with said fan shaft,vsaid casing having a series of ducts terminating substantially on said cylindrical surface, arcuate lter means arranged -with its outer surface substantially on said cylindrical surface, means supporting saidv filter means swingable4 about the axis of said fan shaft, and

v rality of inlet and outlet ducts extending substantially onto said common surface, said outlet duct being registrable with any of s'aid inlet and outlet ducts, an arcuate filter means having its.

outer surface lying substantially on said common cylindrical surface, means supporting said filter means adjustable about the axis of said fan shaft, and means for adjusting the position of said filter means, said filter means being registrable with any of said inlet and outlet ducts in said first named casing.

A vROBERT P. SCHLIRF. v 

